Answer: C, 146
Explanation:
NaCl has a molar mass of 58.44 g/mol.
To change moles to g, we do:
2.50 moles × 58.44 g/mol = 146.1 g, so C
There are essentially three types of Earth orbits: high Earth orbit, medium Earth orbit, and low Earth orbit.
Answer:
i got 6
Explanation:
Because 14 feet divide by 20.5 gives you 0.6
so it 0.6 times 10 =6
Answer:
73140 kJ.
Explanation:
Equation of the hydrogenation reaction:
C2H4 + H2 --> C2H6
Molar mass = (2*12) + (6*1)
= 30 g/mol
Mass of C2H4 = 15.9 kg
= 15900 g
Number of moles = mass/molar mass
= 15900/30
= 530 mol of C2H6
By stoichiometry, 1 mole of C2H4 is hydrogenated to give 1 mole of C2H6
Number of moles of C2H4 = 530 mole
Q = n * q
= 530 * 138 kJ
= 73140 kJ.
Answer: C. Atoms cannot be subdivided, created, or destroyed. This is the correct answer
